练习（一） 1. He stepped into the office, _down and began to fill in the forms. A. sitting B. to sit C. sat D. having it2. She said she would telephone but we _from her so far. A. havent heard B. didnt hear C. hadnt heard D. wont hear3. When I got to the cinema, the film_ for ten minutes. A. has begun B. had begun C. had been on D. was4. Ill go with you as soon as I_ my homework. A
